sync: Inject sync/'s dependency on invalidations

sync/sync_tests.gypi

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     # Test support files for the 'sync_core' target.
     {
       'target_name': 'test_support_sync_core',
       'type': 'static_library',
@@ skipping 41 matching lines @@
         'test/engine/single_type_mock_server.h',
         'test/engine/test_directory_setter_upper.cc',
         'test/engine/test_directory_setter_upper.h',
         'test/engine/test_id_factory.h',
         'test/engine/test_syncable_utils.cc',
         'test/engine/test_syncable_utils.h',
         'test/fake_encryptor.cc',
         'test/fake_encryptor.h',
         'test/fake_sync_encryption_handler.cc',
         'test/fake_sync_encryption_handler.h',
+        'test/mock_invalidation.cc',
+        'test/mock_invalidation.h',
+        'test/mock_invalidation_tracker.cc',
+        'test/mock_invalidation_tracker.h',
+        'test/trackable_mock_invalidation.cc',
+        'test/trackable_mock_invalidation.h',
         'test/null_directory_change_delegate.cc',
         'test/null_directory_change_delegate.h',
         'test/null_transaction_observer.cc',
         'test/null_transaction_observer.h',
         'test/sessions/test_scoped_session_event_listener.h',
         'test/sessions/mock_debug_info_getter.h',
         'test/sessions/mock_debug_info_getter.cc',
         'test/test_directory_backing_store.cc',
         'test/test_directory_backing_store.h',
         'test/test_transaction_observer.cc',
@@ skipping 551 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'sync_unit_tests',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }